Have you ever wondered what the inside of an air-cooled Porsche 911 engine looks like and how it’s put together? If so, watch the guys from Speed Academy as they take apart the engine from their Porsche 930 in preparation for a full rebuild.

We appreciate these guys sharing the video of their tear-down so we could take a look at the guts of this legendary engine. It may be slow to watch, but it’s also thorough. If you’re a Porsche fan with 25 minutes to spare, be sure to check this one out.